1019] ECONOMIC ZOOLOGY — ENTOMOLOGY. 649 



Manual of vegetable-garden Insects, C. R. OBXJSSY and M. D. Leonard (New 

 York: The \focmiUam Co., 1918, pp. XV+S91, figs. 232).— The agm gessent of 

 tli in work is by chapters on the insects Injurious to the principal vegetable crops, 

 Including cabbage ami related crops; pens and beans; beel and spinach; cucum- 

 ber, Bquash, and melon; potato; tomato; eggplant; carrot, celery, parsnip, and 

 related crops; asparagus; corn; sweet potato; and oaton, respectively. Chap- 

 ters on insects injurious to minor vegetable crops, cat; w e * m a and army worsts, 

 blister beetles, flea-beetles, unclassified pests, and insects and insecticides 



follow. 



(Castor .insects in Ceylon] {Trap. Agr. [Ceylon], 51 (IMS), No. 5. pp. 298- 

 300. pi. 1). — Three insect enemies of castor In Ceylon are briefly considered, 

 namely, the castor seed caterpillar (Didhocroote pun<-tiferalix) , the castor s>-mi- 

 looper caterpillar (Ophiuxa melicertc), and the "green fly" (Empnnsca 

 flavescene). 



Insects and infections at the front, F. Mksnil and EL EtoOKADD {Ootnpt. 

 Rend. 80C. Biol [Paris], 81 (1918), No. 20, pp. 1034-1038).— A discussion of the 

 relation of insects to disease transmission. 



First list of the Dermaptera and Orthoptera of Plummers Island, Md., and 

 vicinity, W. L. McAtke and A. N. Caudell (Proe. Ent, Nor. Wash., 19 {1917), 

 Nos. 1-4, pp. 100-122, fig. 1). — An annotated list of 10. r » species, of which 73 

 were taken on Plummers Island, Md. A bibliography of 23 titles la Included. 



Schistocerca tartarica taken at sea, L. O. Howard (Proe. Ent. Soc. Wash.. 

 19 (1917), No. 1-/,, p. 77).— -This locust was taken by Capt. L. ISXHthensen of 

 the Norwegian bark Robert Scrafton 1,200 nautical miles from the African 

 const. 



Notes on some Trinidad thrips of economic importance, C. R. Williams 

 i liul. Drpt. Agr. Trinidad and Tobago, 11 (1918), No. 3, pp. U,3-l.',t], pis. /,).— 

 The species here noted are Franklinnthrips veepiformia, /•'. temtieomte, lhlin- 

 thrips lurmorrhnidnlis, Selenothrips (Heliothrips) rubrorinctiis. Cori/nothrips 

 stcnopterus, Frankliniclla insularis, Physothrips xanthius, and Srdulothrips 

 tnaoleru. 



The citrus thrips, A. W. Morrill (Aria. Col. Agr. Ext. Sen: Cire. 23 (1918), 

 pp. 5, figs. 3). — A popular summary of information. 



Some important orchard plant lice, T. J. IIeadi.ee (New Jersey Stas. Bui. 

 328 (1918), pp. 5-27, figs. 7).— This bulletin relates to three species of plant 

 lice, namely, the apple aphis, the rosy apple aphis (Aphis sortri), and the 

 European grain aphis, all of which attack the foliage and fruit of 1 lie apple and are 

 capable under favorable conditions of destroying a large percentage of the crop. 

 These three species winter over on the water sprouts, twigs, and smaller 

 branches of the apple as small shining black oval eggs just large enough to 

 be seen with the naked eye. The clover aphis (A. bakeri) has not appeared 

 in the State. 



Experimental show that the most practical method of control consists of the 

 application of winter strength lime-sulphur, to which 40 per cent nicotin has 

 been added at the rate of 1:600, during the green bad stau'e. At this time the 

 maximum number of lice will be hatched and will be killed by the nicotin, and 

 the uuhatclied eggs will be in their most sensitive state and will be destroyed 

 by the mixture. 



Notes on the biology of Schizonotus sieboldii, R. A. Cushman (Proe. Ent. 

 Soc. Wash., 19 (1917), No. 1-4. pp. 128. 129, pi, 1).— The author has found 95 

 per cent of the pups* of Mekuome interruption on alder at North East, Pa., to 

 be parasitized by fif. sieboldii. 



Some grass root aphids, C. P. Gillette (Ent. News, 29 (1918), No. 8. pp. 

 281-28.' f , pi, 1). — Descriptions and notes are given on two species of Forda, the 



